btrfs: rename enospc label to out at balance_level()

At balance_level() we have this 'enospc' label where we jump to in case
we get an error at several places. However that error is certainly not
-ENOSPC in call cases, it can be -EIO or -ENOMEM when reading a child
extent buffer for example, or -ENOMEM when trying to record tree mod log
operations. So to make this less confusing, rename the label to 'out'.

Reviewed-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c
index d60b28c..e98f9e2 100644 (file)
--- a/fs/btrfs/ctree.c
+++ b/fs/btrfs/ctree.c
@@ -1041,7 +1041,7 @@ static noinline int balance_level(struct btrfs_trans_handle *trans,
                if (IS_ERR(child)) {
                        ret = PTR_ERR(child);
                        btrfs_handle_fs_error(fs_info, ret, NULL);
-                       goto enospc;
+                       goto out;
                }
 
                btrfs_tree_lock(child);
@@ -1050,7 +1050,7 @@ static noinline int balance_level(struct btrfs_trans_handle *trans,
                if (ret) {
                        btrfs_tree_unlock(child);
                        free_extent_buffer(child);
-                       goto enospc;
+                       goto out;
                }
 
                ret = btrfs_tree_mod_log_insert_root(root->node, child, true);
@@ -1058,7 +1058,7 @@ static noinline int balance_level(struct btrfs_trans_handle *trans,
                        btrfs_tree_unlock(child);
                        free_extent_buffer(child);
                        btrfs_abort_transaction(trans, ret);
-                       goto enospc;
+                       goto out;
                }
                rcu_assign_pointer(root->node, child);
 
@@ -1087,7 +1087,7 @@ static noinline int balance_level(struct btrfs_trans_handle *trans,
                if (IS_ERR(left)) {
                        ret = PTR_ERR(left);
                        left = NULL;
-                       goto enospc;
+                       goto out;
                }
 
                __btrfs_tree_lock(left, BTRFS_NESTING_LEFT);
@@ -1096,7 +1096,7 @@ static noinline int balance_level(struct btrfs_trans_handle *trans,
                                       BTRFS_NESTING_LEFT_COW);
                if (wret) {
                        ret = wret;
-                       goto enospc;
+                       goto out;
                }
        }
 
@@ -1105,7 +1105,7 @@ static noinline int balance_level(struct btrfs_trans_handle *trans,
                if (IS_ERR(right)) {
                        ret = PTR_ERR(right);
                        right = NULL;
-                       goto enospc;
+                       goto out;
                }
 
                __btrfs_tree_lock(right, BTRFS_NESTING_RIGHT);
@@ -1114,7 +1114,7 @@ static noinline int balance_level(struct btrfs_trans_handle *trans,
                                       BTRFS_NESTING_RIGHT_COW);
                if (wret) {
                        ret = wret;
-                       goto enospc;
+                       goto out;
                }
        }
 
@@ -1149,7 +1149,7 @@ static noinline int balance_level(struct btrfs_trans_handle *trans,
                                        BTRFS_MOD_LOG_KEY_REPLACE);
                        if (ret < 0) {
                                btrfs_abort_transaction(trans, ret);
-                               goto enospc;
+                               goto out;
                        }
                        btrfs_set_node_key(parent, &right_key, pslot + 1);
                        btrfs_mark_buffer_dirty(parent);
@@ -1168,12 +1168,12 @@ static noinline int balance_level(struct btrfs_trans_handle *trans,
                if (!left) {
                        ret = -EROFS;
                        btrfs_handle_fs_error(fs_info, ret, NULL);
-                       goto enospc;
+                       goto out;
                }
                wret = balance_node_right(trans, mid, left);
                if (wret < 0) {
                        ret = wret;
-                       goto enospc;
+                       goto out;
                }
                if (wret == 1) {
                        wret = push_node_left(trans, left, mid, 1);
@@ -1198,7 +1198,7 @@ static noinline int balance_level(struct btrfs_trans_handle *trans,
                                                    BTRFS_MOD_LOG_KEY_REPLACE);
                if (ret < 0) {
                        btrfs_abort_transaction(trans, ret);
-                       goto enospc;
+                       goto out;
                }
                btrfs_set_node_key(parent, &mid_key, pslot);
                btrfs_mark_buffer_dirty(parent);
@@ -1225,7 +1225,7 @@ static noinline int balance_level(struct btrfs_trans_handle *trans,
        if (orig_ptr !=
            btrfs_node_blockptr(path->nodes[level], path->slots[level]))
                BUG();
-enospc:
+out:
        if (right) {
                btrfs_tree_unlock(right);
                free_extent_buffer(right);